A History of Kentucky Baptists From 1769 to 1885, Including More Than 
800 Biographical Sketches, J. H. Spencer, Manuscript Revised and 
Corrected by Mrs. Burilla B. Spencer, In Two Volumes.  Printed For the 
Author.  1886.  Republished By Church History Research & Archives 1976 
Lafayette, Tennessee. Vol. 2, page 343.

CORNELIUS DUVAL was regarded one of the best preachers in Concord 
Association, in his generation.  He was a minister in Greenup Forks 
church, as early as 1822, and pastor at Long Ridge, a year earlier.  In 
1829, he went into the constitution of the church at Owenton, and was 
pastor of that congregation about twelve years.  He was also pastor of 
Muscle Shoals, and perhaps other churches.  He ceased his labors in this 
region about 1800.  Whether he was called home at this period, or sought 
another field of labor, has not been ascertained.

Duval
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http://www.rootsweb.com/~kygenweb/kybiog/owen/duval.c.txt